油开关合闸后，蓄电池放电电流表不返回，应立即（）。 拉开操作电源。 拉开合闸电源。 取下合闸保险。
对学校来说，做好教师队伍建设重点做好两件事。
You are using Recovery Manager （RMAN） for backup and recovery operations. Your backup and recovery policy is such that you are performing full database backup every Tuesday and Friday. You configure RMAN using the following command： RMAN>CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 4 DAYS； All backup and archived redo logs generated during the current week are as follows： Which of the following files will be listed when issuing the REPORT OBSOLETE command on Sunday？ （） the archived redo log with the log sequence 520。 the backup files from the full database backup performed on Tuesday。 the archived redo log with the log sequence 520 and the backup files from the full database backup performed on Tuesday。 archived redo logs with the log sequences 520， 521， 522 and the backup files from the full database backup performed on Tuesday。
为使分离器的分离效果和电泵正常工作，套压不得超过（） 5MPa。 4MPa。 2MPa。
Which two statements are true regarding the Oracle Data Pump export and import operations（） You cannot export data from a remote database.。 You can rename tables during an import operation.。 You can overwrite existing dump files during an export operation.。 You can compress the data during export but not the metadata because it is not supported.。
到19世纪中期，英国在亚洲地区完全占领了（）。（1）中国（2）印度（3）新加坡（4）奥斯曼帝国
